CN111812848B - Near-to-eye display structure - Google Patents
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- CN111812848B CN111812848B CN202010857973.2A CN202010857973A CN111812848B CN 111812848 B CN111812848 B CN 111812848B CN 202010857973 A CN202010857973 A CN 202010857973A CN 111812848 B CN111812848 B CN 111812848B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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Abstract
The invention discloses a near-to-eye display structure, which comprises an angle selection diaphragm, a screen, a first semi-transparent semi-reflective diaphragm and a second semi-transparent semi-reflective diaphragm, wherein the first semi-transparent semi-reflective diaphragm is arranged on one side, facing towards eyes, of the angle selection diaphragm, the second semi-transparent semi-reflective diaphragm is arranged on one side, far away from eyes, of the angle selection diaphragm, the first semi-transparent semi-reflective diaphragm, the angle selection diaphragm and the screen, which is arranged above the first semi-transparent semi-reflective diaphragm in an inclined mode and faces the angle selection diaphragm, are enclosed to form a light walking space, one side, far away from eyes, of the second semi-transparent semi-reflective diaphragm is an outwards convex curved surface, and a distance adjusting structure for adjusting the distance through opposite or reverse movement is arranged between the angle selection diaphragm and the second semi-transparent semi-reflective diaphragm. The structure arrangement improves the perspective efficiency; and the definition adjustment of the image seen by human eyes is realized through the position adjustment of the outermost reflector.
Description
Technical Field
The invention belongs to the technical field of optical display, and particularly relates to a near-to-eye display structure.
Background
One of the core technologies in the field of Augmented Reality (AR) is a transmissive optical display system, which can superimpose a computer-generated image on the real vision of a user, so that a virtual image and a real image are seamlessly integrated. The combination of the digital world and the real world brings a completely new experience to the user. AR technology is now widely used in gaming, retail, education, industry, and medical fields.
At present, the augmented reality technology usually adopts a transmission type optical display mode, and comprises schemes such as a holographic grating, a reflection waveguide, a common reflection prism and a free-form surface prism. In the existing optical display structure, the high-brightness screen is generally an opaque screen, and the setting position of the opaque screen generally affects the perspective effect. And, when the focal length needs to be adjusted, it is usually realized by adjusting the position of the screen. If the position of the screen needs to be adjusted in a rotating mode, the image can also rotate, and meanwhile the problem that the screen wiring is electrified needs to be considered. In addition, when AR glasses need be equipped with near-sighted regulatory function, need install extra near-sighted adjusting device additional, lead to overall structure increase, increase cost has reduced and has worn the experience.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art. Therefore, the invention provides a near-eye display structure, which aims to avoid the influence of a screen on the perspective effect and can be convenient for realizing the definition of images viewed by human eyes.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a nearly eye shows structure, includes the angle selection diaphragm, show the structure still include the screen, locate the angle selection diaphragm towards the first semi-transparent semi-reflection diaphragm that people's eye one side and slope set up and locate the angle selection diaphragm and keep away from the second semi-transparent semi-reflection diaphragm of people's eye one side, the first semi-transparent semi-reflection diaphragm with the angle selection diaphragm and locate the first semi-transparent semi-reflection diaphragm inclined top and towards the screen of angle selection diaphragm enclose close and form light walking space, the second semi-transparent semi-reflection diaphragm is kept away from a side of people's eye and is outside convex curved surface, the angle is selected to be equipped with between diaphragm and the second semi-transparent semi-reflection diaphragm through in opposite directions or reverse motion with the interval regulation structure of spacing.
The distance adjusting structure is a rotary distance adjusting structure for adjusting the distance by adjusting the second semi-permeable semi-reflective membrane through forward and reverse rotation.
The rotary distance adjusting structure is a thread matching structure arranged at the sleeving end of the second semi-permeable semi-reflecting diaphragm and the angle selection diaphragm.
The thread matching structure comprises an internal thread section arranged on one side of the second semi-permeable and semi-reflective membrane facing the angle selection membrane and an external thread section arranged on one side of the angle selection membrane facing the second semi-permeable and semi-reflective membrane and matched with the internal thread section.
The screw-thread fit structure is including locating the second and half permeating the outer screw thread section of anti-diaphragm one side towards the angle selection diaphragm and locating the angle selection diaphragm and half permeating the interior screw thread section of anti-diaphragm one side and outer screw thread section complex towards the second.
The angle selection film comprises an angle selection lens and an angle selection film arranged on one side surface of the angle selection lens close to human eyes, the angle selection film is in a reflection state for incident light between zero and forty-five degrees, and is in a projection state for light at other angles.
The first semi-transparent semi-reflective membrane comprises a transparent lens and a semi-transparent semi-reflective membrane plated on the surface of the transparent lens.
The second semi-transparent semi-reflective film is a convex lens with central symmetry, one side surface of the convex lens far away from the human eyes is a curved surface with central symmetry, and the surface of the curved surface is plated with the semi-transparent semi-reflective film.
The angle selection diaphragm, the first semi-transparent semi-reflective diaphragm and the second semi-transparent semi-reflective diaphragm are arranged in a manner of sharing an optical axis with human eyes.
The display structure further comprises a concave lens arranged on the outer side of the curved surface.
The screen is an OLED or LED display screen.
The light reflection and transmission process adopting the display structure comprises the following steps: the light that the screen sent selects the diaphragm to the angle, and the light of angle selection diaphragm to this incident angle is reflective state for the light reflection of incident is to first semi-transparent semi-reflective diaphragm, and 50% light is reflected back to the angle selection diaphragm by first semi-transparent semi-reflective diaphragm, and the light angle at this moment can transmit the angle selection diaphragm, later shoots at second semi-transparent semi-reflective diaphragm, and the light that the second semi-transparent semi-reflective diaphragm reflected sees through angle selection diaphragm, first semi-transparent semi-reflective diaphragm in proper order and gets into the people's eye formation of image.
The invention has the beneficial effects that: the screen is arranged obliquely above the diaphragm, so that a perspective area is not shielded, and the screen is not required to be of a transparent structure, and the perspective efficiency is improved due to the arrangement of the structure; and the definition adjustment of the image seen by human eyes is realized through the position adjustment of the outermost reflector. Through setting to rotatory interval regulation structure, when rotation regulation, the image can not follow the rotation, need not to consider the problem that the screen was walked the line and is electrified. The near-to-eye display structure can realize the near-sightedness adjusting function of the AR glasses, is simple and convenient to use, does not need to be additionally provided with an additional near-sightedness adjusting device, and is small in size and low in cost. Compared with the switching of the myopia lenses, the continuous adjustment of 0-7D can be realized, and the matching degree with the eyesight is better.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only one or more embodiments of the present specification, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention after adjusting the spacing;
FIG. 3 is a partially enlarged view of the threaded connection between the second semi-permeable and semi-reflective membrane and the angle selective membrane;
FIG. 4 is a schematic view of the configuration of the present invention in which concave lenses are provided on the outermost sides;
fig. 5 is a schematic structural diagram of the present invention provided with a second compensation mirror.
Labeled in the figure as:
1. an angle selection diaphragm; 2. a screen; 3. a human eye; 4. a first semi-transparent semi-reflective membrane; 5. a second semi-permeable semi-reflective membrane; 6. a concave lens; 7. and a second compensation mirror.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation. It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the following embodiments, the terms "first" and "second" do not denote absolute differences in structure and/or function, nor do they denote any order of execution, but rather are used for descriptive convenience only.
As shown in fig. 1 to 3, a nearly eye shows structure, including angle selection diaphragm 1, show the structure and still include the screen 2, locate angle selection diaphragm 1 towards people's eye 3 one side and the first semi-transparent semi-reflective diaphragm 4 that the slope set up and locate angle selection diaphragm 1 and keep away from the second semi-transparent semi-reflective diaphragm 5 of people's eye 3 one side, first semi-transparent semi-reflective diaphragm 4 and angle selection diaphragm 1 and locate first semi-transparent semi-reflective diaphragm oblique top and towards the screen 2 of angle selection diaphragm enclose and close and form light walking space, the second semi-transparent semi-reflective diaphragm 5 keeps away from a side of people's eye for outside convex curved surface, be equipped with between angle selection diaphragm 1 and the second semi-transparent semi-reflective diaphragm 5 through in opposite directions or reverse motion with the interval adjustment structure of adjustment interval. In the near-eye display structure, the screen can adopt an OLED or LED display screen; the screen is arranged above the diaphragm in an inclined mode, a perspective area is not shielded, the screen is not required to be of a transparent structure, the structure is arranged, and the perspective efficiency is improved. The angle selection membrane is used for totally reflecting light of a screen image to the first semi-transparent semi-reflective membrane (the first reflection is total internal reflection of the lens), and receiving light transmitted in the positive and negative directions of the first semi-transparent semi-reflective membrane and the second semi-transparent semi-reflective membrane, wherein the light reflected by the first semi-transparent semi-reflective membrane is received and projected to the second semi-transparent semi-reflective membrane, and the light reflected by the second semi-transparent semi-reflective membrane is received and transmitted to the first semi-transparent semi-reflective membrane; the first semi-transparent semi-reflective film is used for reflecting the light part reflected by the angle selection film back to the angle selection film and transmitting the light rays reflected by the second semi-transparent semi-reflective film passing through the angle selection film; the second semi-transparent semi-reflective film is used for reflecting the light rays transmitted by the angle selection film. The light reflection and transmission process adopting the display structure comprises the following steps: the light that the screen sent is to the angle selection diaphragm, and the angle selection diaphragm is to the light of this incident angle reflective state for the light reflection of incident is to first transflective diaphragm, and 50% light is reflected back to the angle selection diaphragm by first transflective diaphragm, and the light angle at this moment can transmit the angle selection diaphragm, later shoots the second transflective diaphragm, and the light that the second transflective diaphragm reflected sees through angle selection diaphragm, first transflective diaphragm in proper order gets into people's eye formation of image.
The distance adjusting mechanism can adopt a transverse stretching adjusting or rotating adjusting mode, and the transverse stretching adjusting needs to additionally increase the structure and increase the structure cost. Preferably, the distance adjusting structure is a rotary distance adjusting structure for adjusting the distance by adjusting the second semi-permeable semi-reflective membrane through forward and reverse rotation. The rotary distance adjusting structure can adopt the existing adjusting modes such as button-cutting rotation, thread rotation and the like. Preferably, as shown in fig. 3, the rotary distance adjusting structure is a screw thread matching structure arranged at the sleeving end of the second semi-permeable and semi-reflective membrane and the angle selection membrane. This screw-thread fit structure accessible both structures set up the form and realize, one kind is that the screw-thread fit structure is including locating the second semi-permeable semi-reflective membrane 5 towards the internal thread section of angle selection membrane 1 one side and locating the angle selection membrane 1 towards the second semi-permeable semi-reflective membrane 5 one side and internal thread section complex external thread section. The other structure form is as follows: this screw-thread fit structure is including locating the second and half permeating the outer screw thread section of anti-diaphragm one side towards the angle selection diaphragm and locating the angle selection diaphragm and half permeating the interior screw thread section of anti-diaphragm one side and outer screw thread section complex towards the second. When the distance needs to be finely adjusted, the second semi-transparent semi-reflective membrane is rotated in the positive and negative directions manually, so that the second semi-transparent semi-reflective membrane can be translated towards the human eye direction or away from the human eye direction along the optical axis, the distance between the second semi-transparent semi-reflective membrane and the angle selection membrane is adjusted, and the definition of an image entering the human eye can be adjusted. This kind need not the rotation regulation screen when rotation regulation, and the image can not follow the rotation, need not to consider the problem that the screen was walked the line and is electrified.
The angle selection film 1 comprises an angle selection lens and an angle selection film arranged on one side surface of the angle selection lens close to human eyes, wherein the angle selection film is in a reflection state for incident light between zero and forty-five degrees and in a projection state for light at other angles. The selection of the incident and transmission angles facilitates better matching with the arrangement of the near-to-eye display structure, so as to achieve relatively better human eye imaging effect. And processing the angle selection film on the side surface of the angle selection lens close to the human eye. The incident and transmission angles of the angle selection film are set at the above-mentioned angles.
The first semi-transparent semi-reflective membrane 2 comprises a transparent lens and a semi-transparent semi-reflective membrane plated on the surface of the transparent lens. Adopt transparent lens, the better transmission of light of being convenient for combines to plate in the semi-transparent semi-reflecting film on transparent lens surface, and the selectivity of the light of being convenient for sees through and reflects.
The second semi-transparent semi-reflective film 5 is a convex lens with central symmetry, one side surface of the convex lens far away from human eyes is a curved surface with central symmetry, and the surface of the curved surface is plated with the semi-transparent semi-reflective film. The convex lens is a movable lens, the arrangement of a central symmetrical structure is adopted, the reflection of light rays is facilitated, and meanwhile, the reflection angle is relatively more balanced, so that the image quality is improved, and the definition of reflection imaging is improved. The type of the curved surface may be a spherical surface, an aspherical surface, or a free-form surface.
In order to further improve the reasonable structural arrangement of human eye imaging, the angle selection diaphragm 1, the first semi-transparent semi-reflective diaphragm 2, the second semi-transparent semi-reflective diaphragm 5 and the human eye 3 are arranged in a coaxial mode. Because the light reflects through the first semi-transparent semi-reflective membrane and then forms a coaxial light path with the lens, in order to further increase the definition of human eye imaging, a compensation plate is preferably added, the compensation plate is used as a first compensation mirror to compensate the light energy generated by the ambient light on the second semi-transparent semi-reflective membrane, the compensation plate is glued and fixed with the second semi-transparent semi-reflective membrane, and when the second semi-transparent semi-reflective membrane moves, the compensation plate moves along with the second semi-transparent semi-reflective membrane.
In addition, as a further modification, as shown in fig. 4, the display structure further includes a concave lens 6 provided outside the curved surface. The concave lens can be connected at a corresponding position outside the curved surface through gluing; further increasing the rationality requirements for imaging of such display structures.
As shown in fig. 5, the lens is a solid structure, the display structure further includes a second compensation mirror 7 disposed on the outer side of the first transflective film 2, so as to compensate for all optical paths (including display and viewing), and the second compensation mirror 7 is fixedly connected to the first transflective film 2.
As another preferred embodiment, the second compensation mirror and the first transflective film may be disposed in a prism. When the lens is specifically arranged, the first semi-transparent semi-reflective film is positioned in a space formed by the inner wall surface of one side, far away from eyes, of the second compensation lens and the prism. The structure arrangement can well form the compensation of all light paths, and the structural layout is optimized.
The adjusting method adopting the near-to-eye display structure comprises the following steps: according to the visual field adjusting requirement of a user, the second semi-transparent semi-reflective membrane is manually rotated, when a relatively large diopter needs to be adjusted, the second semi-transparent semi-reflective membrane is positively rotated, so that the second semi-transparent semi-reflective membrane gradually approaches towards the direction of human eyes, and when the second semi-transparent semi-reflective membrane is adjusted to a proper position, the second semi-transparent semi-reflective membrane is stopped to be positively rotated; when the relatively small diopter needs to be adjusted, the second semi-transparent semi-reflective membrane is reversed, so that the second class head semi-reflective membrane is gradually far away from the direction departing from the human eyes, and when the proper position is adjusted, the second semi-transparent semi-reflective membrane is stopped to be reversed.
For the myopia users, because the focal power of the whole display structure is mainly provided by the second semi-transparent semi-reflective membrane, the diopter of the light path can be changed by adjusting the position of the second semi-transparent semi-reflective membrane (close to or far away from the eyes of the user), and the myopia adjustment is realized. The farther away from the eye, the smaller the diopter, and the closer to the eye, the larger the diopter. The distance between the second semi-transparent semi-reflective film and the human eyes can be adjusted to better adapt to the change of the myopia condition of the myopia user, and finally the myopia user can see the image clearly.
The display structure realizes the myopia adjusting function of the AR glasses through the lens of the light path, is simple and convenient to use, does not need to be additionally provided with an additional myopia adjusting device, and is small in size and low in cost. Compared with the switching of the myopia lenses, the continuous adjustment of 0-7D can be realized, and the matching degree with the eyesight is better.
Furthermore, the display structure can be used for hyperopic patients, and can be covered (adjusted towards the direction close to human eyes) by adjusting the range of front and back adjustment.
The invention is described above with reference to the accompanying drawings. Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the present disclosure, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present description as described above, which are not provided in detail for the sake of brevity. It is clear that the specific implementation of the invention is not restricted in the above manner. Any insubstantial improvements over the methods and technical solutions of the present invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
The embodiments of the present description are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalents, improvements, and the like that may be made without departing from the spirit or scope of the embodiments of the present disclosure are intended to be included within the scope of the disclosure.
Claims (10)
1. The utility model provides a nearly eye shows structure, includes the angle selection diaphragm, its characterized in that, show the structure and still include the screen, locate the angle selection diaphragm towards the first semi-transparent semi-reflection diaphragm that people's eye one side and slope set up and locate the angle selection diaphragm and keep away from the second semi-transparent semi-reflection diaphragm of people's eye one side, first semi-transparent semi-reflection diaphragm and angle selection diaphragm and locate first semi-transparent semi-reflection diaphragm oblique top and enclose towards the screen of angle selection diaphragm and close and form light walking space, the second semi-transparent semi-reflection diaphragm is kept away from a side of people's eye and is outside convex curved surface, be equipped with between angle selection diaphragm and the second semi-transparent semi-reflection diaphragm through in opposite directions or reverse motion with the interval control structure of spacing, angle selection diaphragm and people's eye sharing optical axis setting.
2. The near-to-eye display structure of claim 1, wherein the distance adjusting structure is a rotary distance adjusting structure for adjusting the distance by adjusting the second transflective film through forward and backward rotation.
3. The near-to-eye display structure of claim 2, wherein the rotary distance adjustment structure is a screw thread matching structure disposed at the coupling end of the second transflective film and the angle selection film.
4. The near-eye display structure of claim 3, wherein the thread-engaging structure comprises an internal thread section disposed on a side of the second transflective membrane facing the angle-selecting membrane and an external thread section disposed on a side of the angle-selecting membrane facing the second transflective membrane and engaged with the internal thread section.
5. The near-to-eye display structure of claim 3 wherein the thread-engaging structure comprises an external thread section disposed on a side of the second transflective membrane facing the angle-selective membrane and an internal thread section disposed on a side of the angle-selective membrane facing the second transflective membrane and engaging with the external thread section.
6. The near-eye display structure of claim 1 wherein the angle-selective membrane comprises an angle-selective mirror and an angle-selective film disposed on a side of the angle-selective mirror adjacent to the human eye, the angle-selective film being reflective to light incident at between zero and forty-five degrees and transmissive to light at other angles.
7. The near-to-eye display structure of claim 1 wherein the first transflective film comprises a transparent lens and a transflective film coated on a surface of the transparent lens.
8. The near-eye display structure of claim 1, wherein the second transflective film is a convex lens with central symmetry, a side of the convex lens away from the human eye is a curved surface with central symmetry, and the surface of the curved surface is plated with the transflective film.
9. The near-to-eye display structure of claim 1, wherein the angle selective membrane, the first transflective membrane and the second transflective membrane are disposed coaxially with the human eye.
10. The near-to-eye display structure of claim 1 further comprising a concave lens disposed outside the curved surface.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102132192A (en) * | 2008-08-26 | 2011-07-20 | 微视公司 | Optical relay for compact head up display |
| CN206741082U (en) * | 2016-04-07 | 2017-12-12 | 谷歌公司 | The equipment being used together with head mounted display and the head mounted display |
| CN109752854A (en) * | 2019-03-28 | 2019-05-14 | 深圳创龙智新科技有限公司 | A kind of optical glasses |
| CN111025659A (en) * | 2019-12-31 | 2020-04-17 | 上海视欧光电科技有限公司 | Augmented reality optical module and augmented reality equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9715112B2 (en) * | 2014-01-21 | 2017-07-25 | Osterhout Group, Inc. | Suppression of stray light in head worn computing |
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2020
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102132192A (en) * | 2008-08-26 | 2011-07-20 | 微视公司 | Optical relay for compact head up display |
| CN206741082U (en) * | 2016-04-07 | 2017-12-12 | 谷歌公司 | The equipment being used together with head mounted display and the head mounted display |
| CN109752854A (en) * | 2019-03-28 | 2019-05-14 | 深圳创龙智新科技有限公司 | A kind of optical glasses |
| CN111025659A (en) * | 2019-12-31 | 2020-04-17 | 上海视欧光电科技有限公司 | Augmented reality optical module and augmented reality equipment |
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